蔺家坪水库大坝坝型比选及结构应力计算

Comparison of Dam Type of Linjiaping Reservoir and Its Structural Stress Calculation

蔺家坪水库坝址区地质条件复杂,建坝河段两岸陡峭且不对称,岩石裂隙较发育等,可能给筑坝带来不利影响。结合坝址区地形地貌和水文地质等条件,对坝型、枢纽布置和结构体型进行详细论证分析,并设计优选工程适应性较好的堆石混凝土重力坝方案。计算成果表明:大坝应力和抗滑稳定分析均满足规范要求。对于中低坝而言,软岩基础经一定工程措施处理后,修建重力坝是可行的,可为同类工程设计借鉴参考。

In view of the complicated geological conditions in the dam site area of the Yujiaping Reservoir, the two sides of the dam section are steep and asymmetrical, and the rock fissures are relatively developed, which may adversely affect the dam construction. Combined with the topography and hydrogeology of the dam site area, the dam type, hub layout and structure type are analyzed in detail, and the rockfill concrete gravity dam scheme with better engineering adaptability is designed. The calculation results show that the dam stress and anti-sliding stability analysis meet the requirements of the specification. For medium and low dams, the construction of gravity dams is feasible after the soft rock foundation has been treated by certain engineering measures, and can be used as reference for similar engineering design.